No limit! Shop and submit online. I did this deal and shopped in store, submitted online and received a check in the mail. VARIOUS BRANDS
$10 off 114-128 oz
$25 off 342-384 oz
$40 off 570-640 oz
Form with details:
http://img.rewardpromo
You can also find all their rebates at their rebate center:
http://www.lowes.com/l/rebate-center.html