We got our first MDR515H/F7 in Sept. (W/ much thanks to this forum.) Fell in love w/ it and 2 weeks later bought a second. Both working fine. Decided to get a third "just in case" since we figured getting repairs would be impossible if something went wrong w/ one of the units which we can't live without.
Went to Amazon. Units cost us $250 - 290 in Sept. Today they're selling for $400. (OK, as low as $345 but when you add the shipping all the prices converge at $400).
Noticed that if we plugged in MDR515H/F7, there's a lower price (under $300) and a notice that a newer model exists, MDR515H.
Checked the Walmart site. Shows out of stock online or discontinued.
Does anybody know what is going on?