This is a bit up my alley..I helped my husband put up fence for about 6 yrs... The main difference in fencing is the gauge of the wire, the fence co. may be 12 gauge where the hardware store may be about 11 gauge...what I mean by that is the thickness of the wire...the fence co. is definitely better mainly because of the strength...the diamond shape on the wire from the fence co. is also a little smaller where the hardware store is slightly bigger....all the posts & top rail at the hardware store is also thinner...but if cost is a big factor then the hardware store will be fine, just make sure kids don't jump on it & watch so you don't keep hitting it with the lawn mower other wise it will function just fine....hang onto extra wire for repairs in the wire, you can just remove the damaged section & weave the new part in & it's as good as new, this will only work using the same wire you originally used..Good luck, I wished I lived closer I would love to help....