@farmerman,
The same is true (interrupted production) for Nikon and a few others who make their cams in Japan (as opposed to making them in other Asian countries).
Canon EOSRebel Xt1 is 10.3 MP camera...an older cheaper model than I think you're looking for, FM. correct?
Be aware that reliable and durable used DSLR cameras with good reputations (such as Canon rebel T1i, T2i and T3i) found to be in good shape will command a higher price - especially with warranty. (Perhaps adding 20-25% to the cost).
For example, B&H Photo & Video camera store in NYC has many popular models used, too. You can use their pricing as a guide for local cam store. B&H is one of the most well-reputed camera emporia with a fantastic mail order as well as block-long storefront in Manhattan. They're the LL Bean of cam/tech equip't). I've been doing biz with them for over 30 yrs as do many amateurs and profs.
FWIW, they price their used Canon EOS T2i at $500 (excellent condition) with a new unit selling for $620 (body only). Perhaps you can use that as a guide for pricing.