Sorry for the long post but cut and pasted from
GM's website :2004 Redemption Allowances*
2004 Buick Century $1,500
2004 Buick LeSabre $2,250
2004 Buick Park Avenue $3,000
2004 Buick Rainier $2,250
2004 Buick Regal $2,500
2004 Buick Rendezvous $2,250...