I have sold dozens of bikes on Dosa, but I haven't experienced anything special.
Previously, after selling a BMC Team Machine SLR01, there were no complaints except for when someone contacted me about a rusty headset and I helped out with some repair costs.
1. Wheels. Frames. Complete bikes, partial bikes.
Since these are expensive, you must do direct transactions.
If they look like minors, I verify they're adults... If they're college students, I accept their student ID with personal details hidden. Etc..
If they're far away, from other regions, request express delivery, etc., there's not much else I can do...
Get confirmation that I'm not responsible if defects occur via text // Film a video right before shipping and send it, then get confirmation..
2. Other items.
As a seller, you must write descriptions as detailed as possible. That's the basic rule.
For electronic products (like Garmin, Wahoo, etc.), I always send and receive warranty receipts. When I buy, if there's no receipt, I won't purchase.
For other equipment (helmets, shoes, etc.), these are consumables anyway, so I just buy them trusting the seller.
3. Thoughts on tubular wheels
Everyone knows tubular wheels that were only used for lightweight Rimbrakes are worthless, labor is expensive, materials are expensive... though I'm not sure if they're even made these days.
It's a very important factor in purchasing, but if the seller forgot to mention it, whether intentional or not, it seems there's negligence involved.
Because it's a very important element of the purchase.
You could say the buyer has a duty to verify... but they might not think to suspect something as outdated as tubular wheels.
Frankly, who uses tubular wheels these days?
Have a pleasant lunch
