bought in bulk at auction and yes, some of the solar watches havent held their charge, but technology has improved a lot over the years. the first kinetics were rubbish, but now apparently they are great, perhaps the same can be said about eco-drive. 7 years of ownership is a lot of time for improvements to be made in solar technology. i dont 'own' quartz watches, but used to buy batteries in bulk and fit them myself. i dont think i've ever paid more than $2 for 10 of the most expensive 3v batteries. the mark up by dealers is ridiculous if not criminal. i also agree that if you want a go anywhere bullet proof watch get a G-Shock. i've sold several 100 and never had a complaint from anyone.
i cant see me buying an eco-drive or quartz despite my defence of the breed.