You can currently - don't know how long it will last - purchase rifle scopes and other items on EBay's - yea- I know and hate 'em too - "Buy it Now" items and get a 30% rebate up to $200 IF you first establish a MSN account through www.live.com.
You must first have a MSN cash back account, an EBay account, AND a PayPal account. Read all the rules- some are kinda weird like you can only buy one item per EBay session and you must buy it within 60 min. of logging on to EBay.
To find scope go to www.live.com and type in something like "zeiss rifle scopes conquest" in the search block over the church and click on the find button. It should then take to a list of items the first being on EBay. Click on an EBay link and you are in. Look for the $ in a gold circle and the 30% cashback small banner on top on the EBay screen - if it is not there you did some thing wrong. Going to EBay through an other path other than the www.live.com won't get you the 30% off rebate.
The limit per item is $200 so you can buy a $600 scope for $400 after you get the rebate. I got a new 1.6 x 5 Zeiss Conquest for $280 deliveried for example - normal price was $399.95.
Good luck and make certain you read and follow all the rules!