Are questions that ask **if a product exists** off or on topic?

Usually in these cases the person already knows what they need to solve their problem, they just need to know if it actually exists

For example (only the last 3 are closed),

 1. https://outdoors.stackexchange.com/questions/17405/are-there-any-kid-sized-alpine-touring-ski-boots-and-bindings
 2. https://outdoors.stackexchange.com/questions/6367/are-there-b2-alpine-boot-brands-in-the-uk-besides-la-sportiva-and-scarpa?rq=1
 3. https://outdoors.stackexchange.com/questions/7562/b2-boots-for-narrow-feet
 4. https://outdoors.stackexchange.com/questions/4763/getting-alpine-touring-a-k-a-randonee-boots-for-big-feet
 5. https://outdoors.stackexchange.com/questions/1811/are-there-boots-made-for-a-longer-2nd-toe
 6. https://outdoors.stackexchange.com/questions/14872/can-i-get-crampons-for-small-feet 
 6. https://outdoors.stackexchange.com/questions/11704/is-there-a-portable-fluoride-water-filter
 6. https://outdoors.stackexchange.com/questions/7613/is-there-a-more-practical-type-of-cord-to-carry-than-550-paracord
 
 6. https://outdoors.stackexchange.com/questions/1488/is-there-a-kayak-paddleboard-for-large-people
 6. https://outdoors.stackexchange.com/questions/1762/is-there-a-portable-comfortable-pillow-suitable-for-camping-backpacking
 6. https://outdoors.stackexchange.com/questions/4392/pink-winter-sleeping-bags/4394#4394
 6. https://outdoors.stackexchange.com/questions/799/is-there-a-tool-that-can-calculate-the-time-of-sunrise
 6. https://outdoors.stackexchange.com/questions/14706/is-there-a-mobile-app-to-easily-send-a-sms-message-with-coordinates
 6. https://outdoors.stackexchange.com/questions/8445/is-there-a-game-camera-that-can-immediately-alert-me-when-it-sees-something
 6. https://outdoors.stackexchange.com/questions/13778/is-there-a-handgun-or-rifle-target-practice-set-up-for-the-home
 6. https://outdoors.stackexchange.com/questions/17361/is-there-a-smartwatch-activity-tracker-lasting-20-days-for-a-trek-to-everest-bas?s=24|36.3992
 7. https://outdoors.stackexchange.com/questions/13362/is-there-still-a-m1a1-carbine-replica-production
 8. https://outdoors.stackexchange.com/questions/3639/what-kinds-of-stores-sell-multi-mode-adjustable-brightness-flashlights