I am not questioning the poster who saw that Agassi bought 6 racquet at the club pro shop.
However this sounds a bit hard to believe and I will tell you why?
1) Agassi can easily call his Head contact and have all the racquets overnight to him.
2) It is kind of rare for a club to have 6 of the identical racqeuts in stock. It is possible, though, during a major tournament.
3) It is even rarer for the club to have the same grip size and same heard size and the same length of the racquet in stock. Keep in mind this racquet comes with multiple head sizes, length, and grips. Unless Agassi just picked up 6 of any grip size, head size or length.
(2) and (3) are still possible. Then I would like to know how many racquets are in stock at this club? (it must be in hundreds if it is ONLY a Head dealer. If it also carries other racquets, LOL, the number is enormous.)
I have a close friend who ran a pro shop and he told me that it is very very unlikely for any club to have more than 3 of the same racquets in stock. It is "money hanging on the wall". "We can easily get more in a couple of days if customers want them." Most of time, they will stock a pair of the popular racquets. Keep in mind, a particular manufacturer has many popular racquets, Head prestige mid, MP, Radical, MP, OS, etc, etc, and etc.
Now it is still possible that Agassi asked Head to deliver these 6 racquets to the club so he can pick them up.