There are so many online proofing galleries out there. You are sure to find a match just for your needs in the following list:

Red Cart ($999 one time fee or $89 per month. You fulfill the orders. Probably the best out there, in my opinion!)
Pictage (free -to $99 monthly, 15% of sales, full printing/shipping services)
InstaProofs (no monthly fee, no printing service, takes 15% of your sales)
H&H ($35 per month, and 15% percent of sales, full printing/shipping services)
Collages (first 6 months free, prints/ships, pay per event or pay $70 monthly, $699 annually, plus 15% of sales)
More Photos ($200 one time set-up fee, and monthly fee based on amount of images uploaded)
Zenfolio (optional annual fees of $25, $40 or $100, percentage of sales, print/shipping services, numerous product vendors)
PhotoBiz ($125 one-time setup fee, no commissions, monthly plans based on number of images)
SmugMug ($150 a year for a pro account, full print/shipping services, video storage too!)
NextProof (starting at $9 a month, with 7% of sales)

More Details on Zenfolio! Thanks to Katie Trujillo…
They do take commission if you fulfill through Mpix it’s 12%, you fulfill yourself but THEY collect payment (I do this) it’s 8%, and if you fulfill yourself AND collect payment yourself it’s 4%. I view the % as a fee to store my images online full resolution. It’s like online backup
12% - Service fee for Zenfolio vendor-fulfilled orders, applies to profit only after base product costs and shipping are subtracted. Includes credit card processing, customer service and any remakes.
8% - Service fee for selling digital products fulfilled by Zenfolio. Includes credit card processing, customer service, and storing downloads for 30 days.
4% - Service fee for custom orders fulfilled by photographer directly. PayPal processing fees are extra.