i have 4, one floor model I use in in the living room when working on hand work stuff, one on my cutting table, one by my machine and one I keep in my mag with my travel/retreat/class staff. I should get one more, because now my husband has decided he loves my ott lite when working on his camera equipment! expensive, yes, wait for the coupon and check out create for less on the web, they can sometime have good deals on replacement bulbs. I've replaced one bulb in one machine in (gasp) 6 years.