Welcome aboard, D2T!
It seems like LDS members would have a few sources in the realm of foods for storage. Shouldn't we be asking you who has the best deals? J/K
I've never dealt with the company you posted a link to. They say that their packages are 2200 calories a day worth of food so it doesn't seem too expensive at about $2.73 per meal, 3 meals a day, for 365 days (Premiere Pak).
As deals go, that doesn't seem too bad at all, but I can't comment on the quality.
Their proteins are listed as VegMeat, which I assume is TVP (textured vegetable protein) with flavor additives. A lot of companies do this, but others such as Mountain House include real meat in their packs.
With that said, if you get a year's supply Mountain House Main Entree Pak, you only get one cup of food per meal and it'll cost you about $800.00. On the other hand, the Mountain House Ultimate Pak, which offers the main entree plus sides and extras cost around $3400.00. Please note that I'm recalling the prices from memory, so I could be off.
I can at least say that I have had a number of Mountain House products and that a good portion of them were tasty.