Assuming you want to trade BTC for cash, what is the rate going to be generally speaking? Such as $1000 btc would be worth how much cash? I believe BTC is at least worth the usd cash amount right? And thus there are people that would be offering 2-3% thus $1030 for $1000 worth of btc? Also, I'm curious what is the minimum people usually do for btc to cash transactions. I believe most don't bother if the amount is low since it involves meeting someone up etc.
When you are BUYING BTC, then the amount of USD or other cash will be higher than the bitcoins worth (like if 1 BTC worth $240, then they would traded for 260-270) and if you SELL BTC, then the cash amount would be $210-230.
Also I think that the minimum amount won't be low, it should be at least 100 USD worth I think (as OP stated that it involves meeting) and the seller/buyer needs time and cost (like transportation cost) to buy bitcoins with cash face-to-face.