Hi abby33,
IMO … I would stay away from http://www.nasafoam.ca/ unless you can find out a LOT more information about them. Post #10 here has some guidelines which should help you when buying a memory foam mattress online.
Guideline #1 … They fail
Guideline #2 … They fail
Guideline #3 … They fail
Guideline #4 … Unknown.
In addition to all of this … their listed prices are outrageous and it looks like they are doing this to make discounted pricing look better than it really is.
“Real” mattress companies don’t need to advertise with companies like Groupon to make their mattresses look attractive and they have good value every day of the year.
In addition to this there have been some issues with Groupon itself (a quick search on the internet will turn up lots of links) and if you do decide to go in this direction (which I don’t recommend) I would make sure the company will honor the coupon.
There are too many warning signs and unanswered questions here and too many better choices to give them serious consideration IMO.
Phoenix