I don't know about the return policy but I have used www.discount-merchant.com in the past and they have the highest rated customer satisfaction of any website according to consumer reports. They have only Philips Brand Projection TVs Lamps, which is the original brand for most rear projection TVs. Here are some of their advantages:
• Best Price in the industry for ORIGINAL Philips brand lamps
• Fastest Shipping
• Great Customer Service
• Very knowledgeable staff
I hope this will be fine place for you.