I haven been looking on ebay for a bunch of MRES or IMPS, and it's at a good price right now, but i am a little bit scared to buy from some pepole becuse they cant tell me if ther is a little red sticker on it, Sould i go ahead and buy???
You're really best off if the eBay auction contains a picture of the actual case you'll be getting. I tend to not trust auction if it's a generic picture of a case. If it's the real picture, you should be able to verify packed/inspection dates and TTI (freshness stickers).
That first seller seems to have a pretty long history and no recent negative feedback. The second seller also doesn't seem to have much bad on their record. They might just not be good with communicating.