Use websites that specialize in vintage and collector's items, such as myLRG.com, RubyLane.com and CollectorsWeekly.com, to compare various Rembrandt floor lamps on the market to find an approximate price. Some Internet appraisal websites, such as InstaAppraisal.com, allow users to post items with detailed descriptions and pictures and receive appraisal estimates.
On RubyLane.com, click the drop-down tab on the home page, and select the Furniture & Lighting option. On the following screen, click the Floor Lamps option. In this section of the website, type "Rembrandt" into the search bar. On myLRG.com and CollectorsWeekly.com, use the phrase "Rembrandt floor lamp" to view similar items that are on the market.