return {
    {
        name = 'stone-wall',
        name_label = {'', 'Stone Walls research'},
        type = 'research',
        description = {'', 'Unlocks stone walls research'},
        sprite = 'technology/stone-wall',
        stack_limit = 1,
        price = 50,
        disabled = true,
        disabled_reason = {'', 'DISABLED'}
    },
    {
        name = 'heavy-armor',
        name_label = {'', 'Heavy Armor research'},
        type = 'research',
        description = {'', 'Unlocks heavy armor research'},
        sprite = 'technology/heavy-armor',
        stack_limit = 1,
        price = 100,
        disabled = true,
        disabled_reason = {'', 'DISABLED'}
    },
    {
        name = 'military',
        name_label = {'', 'Military 1 research'},
        type = 'research',
        description = {'', 'Unlocks military research'},
        sprite = 'technology/military',
        stack_limit = 1,
        price = 100,
        disabled = true,
        disabled_reason = {'', 'DISABLED'}
    },
    {
        name = 'military-2',
        name_label = {'', 'Military 2 research'},
        type = 'research',
        description = {'', 'Unlocks military 2 research'},
        sprite = 'technology/military-2',
        stack_limit = 1,
        price = 1500,
        disabled = true,
        disabled_reason = {'', 'DISABLED'}
    },
    {
        name = 'military-3',
        name_label = {'', 'Military 3 research'},
        type = 'research',
        description = {'', 'Unlocks military 3 research'},
        sprite = 'technology/military-3',
        stack_limit = 1,
        price = 2500,
        disabled = true,
        disabled_reason = {'', 'DISABLED'}
    },
    {
        name = 'military-4',
        name_label = {'', 'Military 4 research'},
        type = 'research',
        description = {'', 'Unlocks military 4 research'},
        sprite = 'technology/military-3',
        stack_limit = 1,
        price = 5000,
        disabled = true,
        disabled_reason = {'', 'DISABLED'}
    },
    {
        name = 'tank',
        name_label = {'', 'Tank'},
        type = 'custom_item',
        description = {'', 'Tanks can only be purchased'},
        sprite = 'item/tank',
        stack_limit = 1,
        price = 200,
        disabled = true,
        disabled_reason = {'', 'Research tanks to unlock'}
    },
    {price = 10, name = 'raw-fish'},
    {price = 10, name = 'repair-pack'},
    {
        name = 'random-tier-1',
        name_label = {'', 'Random Science [item=automation-science-pack]'},
        type = 'random-research',
        description = {'', 'Purchase a random research with max tier: Automation Science Packs'},
        sprite = 'item/automation-science-pack',
        stack_limit = 1,
        price = 100,
    },
    {
        name = 'random-tier-2',
        name_label = {'', 'Random Science [item=logistic-science-pack]'},
        type = 'random-research',
        description = {'', 'Purchase a random research with max tier: Logistic Science Pack'},
        sprite = 'item/logistic-science-pack',
        stack_limit = 1,
        price = 200,
        disabled = true,
        disabled_reason = {'', 'Research Logistic Science Pack to unlock'}
    },
    {
        name = 'random-tier-3',
        name_label = {'', 'Random Science [item=military-science-pack]'},
        type = 'random-research',
        description = {'', 'Purchase a random research with max tier: Military Science Pack'},
        sprite = 'item/military-science-pack',
        stack_limit = 1,
        price = 400,
        disabled = true,
        disabled_reason = {'', 'Research Military Science Pack to unlock'}
    },
    {
        name = 'random-tier-4',
        name_label = {'', 'Random Science [item=chemical-science-pack]'},
        type = 'random-research',
        description = {'', 'Purchase a random research with max tier: Chemical Science Pack'},
        sprite = 'item/chemical-science-pack',
        stack_limit = 1,
        price = 800,
        disabled = true,
        disabled_reason = {'', 'Research Chemical Science Pack to unlock'}
    },
    {
        name = 'random-tier-5',
        name_label = {'', 'Random Science [item=production-science-pack]'},
        type = 'random-research',
        description = {'', 'Purchase a random research with max tier: Production Science Pack'},
        sprite = 'item/production-science-pack',
        stack_limit = 1,
        price = 1600,
        disabled = true,
        disabled_reason = {'', 'Research Production Science Pack to unlock'}
    },
    {
        name = 'random-tier-6',
        name_label = {'', 'Random Science [item=utility-science-pack]'},
        type = 'random-research',
        description = {'', 'Purchase a random research with max tier: Utility Science Pack'},
        sprite = 'item/utility-science-pack',
        stack_limit = 1,
        price = 3600,
        disabled = true,
        disabled_reason = {'', 'Research Utility Science Pack to unlock'}
    }
}