That Rally is the most inexpensive new banjo uke on the market - the Magic Flea ($229) and the Mainland ($279) come in second and third on price. Gold Tones and Lanikais tend to run in the mid-hundreds, and the Bean Sprouts are all over $1K.
Vintage is all over eBay, and generally, they cost less, but you need to do some research and know what you're looking for. On vintage ukes, I'd recommend Slingerland Maybell model 20s in the range of $100-$150, and model 24s in the range $150-$200 (these are also sold as S.S. Stewart Collegians and Universities, respectively, and the 24 is occasionally found as a Bruno 'Vernon'). Whatever you do, with vintage, make sure the neck is straight and playable all the way up, and make sure that the wood is intact and not cracked. Metal being clean is a plus, but you can clean metal yourself - just make sure there is no rust. Finally, with eBay, you may get a uke that's not set up, or set up the way you like it. If you can take it to a local luthier for set up, great. You can also do it yourself, if you feel like trying it. I never found it too difficult, but I know exactly how I want the uke to play, and if you're not experienced, it will be better to invest in having a luthier go through it for you and with you.