Basically there's no way to buy anything in secondary market, yes OLX or Quikr etc... exist but they are limited to only people around you (in same city) and do not facilitate payments or logistics or even reviews.
Now someone can make their own website but product discovery is pain and buyers can't trust reviews on website owned by the single seller, neither can trust the refund will be honoured as you need Escrow to deal with the unknown sellers.
India has people who are interested in saving money and buying second hand tools/machines is an option yet it has no eBay or alternative as if startups in India have a blindspot.
For example, I live a town with population of 500K (200km away from Delhi) and while repairing my car, the mechanic told me he will go to Delhi and try getting the spare part from Junkyard owners.
Maybe guys from Delhi, Mumbai, Bangalore don't have this problem but majority of Indian population still lives in small towns and villages where finding 1 used part at affordable price can save a business or medical equipment (life). What are the technical people in small towns are supposed to do? Run to Delhi and Mumbai each time you need a spare part?
Such a waste of human efforts, my mechanic could have instead bought it on eBay from a junkyard owner who is also a seller on ebay through courier if eBay like website existed.
Lemme give you another example, sometime back I was interested in a product from Mobil which only comes in 230L barrel packaging, I need only 2liters of this stuff and there were many sellers on eBay selling it in used Coke/Soda bottles, but I couldn't buy it because I am from India.
Similarly, our junkyards are filled with useful servos, PLCs etc..., linear rails, valves but it's hard to find buyers for the junkyard owners because there's no online marketplace for this
India imports millions of tons of waste from foreign countries yet the stuff that's harvested from it has very inefficient market.
This is holding back innovation as you can build lots of cool things from the used machinery/tools which cost wayyy less than the new stuff.