Walmart offers the Nesco Vision 500-watt Food Dehydrator, model no. FD-39P, for $24.97. Opt for in-store pickup to avoid the $4.97 shipping charge. That's tied with our Black Friday week mention and the best price we've seen. (It's a low now by $12.) This 500-watt dehydrator features a top-mounted fan and dishwasher-safe trays.