BTW they aren't made by Selmer Paris, they are made by Selmer USA a completely different company and I believe is now made in either Taiwan or China. Selmer Paris doesn't make any Curve Soprano's just so you know.
Also Harminizer has a good point why just curved Sops? you could have way more choices with Straight Sopranos. and with that budget check out P.Mauriat's, Bauhaus Walstein, Used Yamaha's(Pro line 6XX and up), Yanagisawa's, and don't forget about Vintage American Sopranos like Martin's, Conn's, and Buescher's, They have a great warm sound, nice and big. the only problem is the intonation and keywork, but the TONE is AMAZING, and it's totally within your budget.