Prices on both have gone up considerably in the last few years.
Even beater rifles of both types go for quite a bit more than in years past.
In recent months I have seen beater Enfields selling for $400-450, and up to $700 for a pristine like new example.
Mausers are a lot harder to quantify, as there is a wider price range, based on type, year, country of origin, condition, markings, etc.
If you are just looking for a good quality/ condition shooter then I recommend looking for a Yugo M48. With a bit of luck you may find one in the $400-450 range (just 2-3 years ago I found one for $300 still in Cosmolene, but I was lucky).