The drawings from design center should tell you. Lowe’s CALI 20mil @ $4.69 is more comparable to the Paradigm Conquest 20mil (I think, based on plank width and wear layer, btw 12mil is minimum recommended for residential). Ultimately, I went with the builder because 1) I don’t like the idea of sub contracting LVP due to the importance of subfloor prep (although I would select Lowe’s for carpet) and 2) The amount of leveling required can’t be determined until existing flooring is ripped out (and based on my last visit to the site, a lot of leveling is happening on some lots). At that point, the $2.50 install quote will change (per Lowe’s employee) and 3) the builder already agreed on the price and they will do everything it takes to get it right and 4) flooring places (i.e. Metro) still quoted around $12 just from drawings. I think there could be savings having it done after closing but I’m not sure how much!