The only listing I see on Midway for $36 (36.49 actually) is a single neck sizer die w/carbide expander button in 6.5x55 Swede.
I might be missing the 6.5 Mannlicher die set at that price though. If it's there, that would be a terrific price for a set.

On the MIdway site I can find:
6.5 M/S,,the RCBS 2 die set is $64 but out of stock. (Graf & Son $67 but OOS)
The Hornady 2 die set is in stock and priced at $66.59 on sale. (Graf & Son $76 but OOS)
Redding 2 die set is $116,,3 die set is $178 (Graf & Son 2 die set $90)

So the Ebay listing is right about 'retail' for the RCBS dies or about what you can get them from Midway,,if you consider that internet retail.
Graf & Son on-line is a bit more but out of stock.
I don't know what either charges to ship their die sets for.
The Ebay listing is $5.

I've picked up a handful of 6.5 Mannlicher die sets and even one set of 6.5x53R RCBS dies at shows over the years. Always bought them at a very good price and then resold them.
I've always had one set (RCBS) for use and it doubles for both the x54 and x53R calibers and works out fine.

Ebay can be a good source, but as pointed out you do have to do a little homework to make sure you're not over paying for what may be already available from retail sources elsewhere on the intro-net.