Saddle and seat tube taken from my bike while shopping – and no, no quick releases were involved. I hope whoever gets “such a deal” on it has a 27mm seat tube and has to deform it to securely hold my 26.8mm post. WTB “Speed She” on the loose – not even a particularly desirable seat.
Don’t buy anything from a guy on a street corner who is out of breath.
There’s effectively no black market for standard / OEM parts, they’re worth too little. Stuff like that gets passed around the “community” until it’s ruined and discarded. Call it the Portland Empathy Tax.
Once a year or so, in view of the massive work done by local bike shops in support of cycling events and community, buy something locally at a price you think is too high. Just keep in practice–Scamazon.scum doesn’t do shit to support any cycling activities or communities that I’ve found yet.
ABUS makes locking skewers and seat post bolts. They only disengage when the bolt head is absolutely flat. As far as I can see, they are not susceptible to exploit.
https://www.abus.com/eng/Mobile-Security/Bike-Safety-and-Security/Locks/NutFix