Surfed on over to AoA today for the first time in ages and saw those two in the used guns section, along with the other usual stuff that I don't know if the prices are good for. I'm guessing that's a decent price for a 48, yes (in excellent condition). Not so sure about the Disco, someone care to chime in on whether that's a good price? (The Disco is also in excellent condition).
I also notice that the Diana 52 in their used section is going for $3 MORE than their price on the new ones lol. I'm guessing it's a typo, they put $395 but they usually have used 52's for about $295. Maybe worth emailing them about to find what the price is supposed to be.