New purse and a dildo.
If she doesn't like the purse, she can go fuck herself
But seriously, an all expenses paid voucher type thing to some day spa including peticure, manicure, waxing, full body massage, the works. EDIT: <- Baller spec
Just saw your price limit. Maybe go for a big picnic basket with some wine and cheeses and take her down to the beach on sunset for some sweet sweet lovin'.