I had my test at Costco yesterday. I was fairly impressed with the overall test. It took over an hour to do it all. When we were through it all the results were pretty much as I had expected; bad in right ear, and really bad in left ear. The technician put no pressure on me to buy a hearing aid and said based on my test and a questionnaire that I filled out I could get by without them at this point. I asked if not wearing hearing aids would cause my hearing to get worse faster. Her response was that on a loss of amplitude vs frequency it would likely not make any difference. She said that my word recognition was good, and if it was worse then there can be deterioration in the way the brain processes sounds, and if you let your word recognition slip the brain has trouble relearning it.
In the end I essentially had to ask her if the Kirkland Signature 8.0 aids were suitable for my hearing loss. She said yes, and I went for them.
My thoughts would be in your case if you feel they work, then go for them. I would compare what the first place is offering to the KS 8.0 to ensure you are getting the best bang for your buck. The link below has the most detailed feature list of the KS 8.0 that I have found. It is actually the Signia 7Nx which is almost identical except the KS8 had no tinnitus masking feature.
Signia Pure 312 Detailed Feature List