So, I buy tickets, but prices all the time are changing for them. It'd be really nice to be able to edit the prices after the purchase, so I can give them away for free or lower the prices to entice more buyers. We might already have this feature for this, and I missed it or it's been already asked for, and if so, I apologize for the repeat.

I can really see people using that to scam. :(

If you mess up, just message an admin and we can change it for you. But otherwise I can really see people advertising at one price, waiting for people to request, then upping the price and selling them for more.

what if we could only change them until they're requested? Or changing prices cancels the requests..? 

^ what ollivander said. because generally if you are giving them for free, once their locked in, you just accept the horse/dog you were giving too, and because if I lower my price, it's just to sell them because I need to make money. Take my dog tickets for example, I bought them for 350k, and want to lower them to 250k.

Or maybe even having to lock in a price that you change it too, meaning you can only lower the price, not raise it, and have a double check screen like with sending money? That way people have to sell for the lower price they put it at, basically eliminating the scamming problem if that makes sense.

Even if it was once they were requested I can still see it being used to scam people. It doesn't happen super often, but every once and awhile I'll get a message from someone asking me to remove their horse's requests because they didn't notice an extra zero. If people could change prices, they could advertise at like 100k and then at the last second change it to 1 mill and PROBABLY the person requestiing wouldn't even notice.