One thing to be aware of, for new-to-LP's buyers: In some cases, an album (album meaning collection of songs---an album can be bought on an LP or a CD, or even as a download. In other words, "album" is not synonymous with "LP") title will be available on LP from two or more labels. For instance, the first two Band albums are currently available in pressings by both Capitol Records (the label the original released versions were on, in 1968 and '69) and Mobile Fidelity. Capitol Records and Mobile Fidelity make their LP's to very different standards, and sound somewhat dissimilar.
I don't know if Barnes & Noble sells either version, but the point is, if you bought either at B & N, it would be the exact same version of that particular LP pressing as you would get from any other retailer---brick & mortar or online. Barnes & Noble are not getting LP's pressed expressly for them, that are different from other retailer's copies of the same title from the same record label.
The ultimate point to be made is that, when one speaks of the quality of the LP's available at Barnes & Noble, it is a matter of the specific label/version of the LP that determines the LP's quality, not that Barnes & Noble is selling it. That is immaterial. Is this horse dead yet ;-)?
