This appears to be a good deal. retail price is $79 I couldn't find it on the site, but when 2 cases are purchased, a 25% discount is automatically applied in the cart. Stack with coupon code UT5VJA for another 10% making the total $106.65 for 144 of the best practice long lasting tennis balls you can buy.
Also if you wanted to purchase these in cases that come in individual 3 ball paper sleeves, the automatic 25% and discount works as well but costs more at $134.99 for 2 cases after discounts.
The Bulk Case balls appear to have the word club stamped on them, but other than that I believe they are identical.
Retail Package Option