Ktools Photohost is one of the most powerful image hosting scripts available. Here are just a few of the features as stated on their website: http://www.ktools.net
Complete website with browser based administration area
Fully Customizable HTML
Configure hosting plans and features
Galleries, Slideshows, 360° Spins, Portfolios
Unlimited members and hosting plans
Fully automated including PayPal integration
I purchased this software for $295 and am selling for $100. I emailed with support this morning and they gave me the ok to sell the script/license, just asking that I contact them again when sold with new owners information once completed so they can update their records.