The helping hands tool IS priced on par with any other laser store. Harbor freight doesn't sell lasers, and also charges quite a hefty shipping amount, which brings us a lot closer than you think, if you don't believe me buy one today. Or if you're argument is you can just go in the store, there's not exactly one around every corner like a gas station.
The tripod mount, quite naturally on many things you can find cheaper in China. The difference here is you order from me, if you're in the US you get it in a few days. DX is well know for their long shipping time, 4-6 weeks average in my experience - and many times they ship half your order to you, and leave you a little note saying we were out of stock on these items, even though their store showed in stock. Plus their customer service department isn't what you call top notch if you ever dealt with them. Sometimes you get what you pay for, or don't get it.
The diffraction grating will cost you $20 for a MOQ of 50 from rainbow, how many people need 50 gratings other than sellers? sounds like you guys have an agenda here for some reason.
Lens caps, .49 cents from modwerx vs. .75 cents, oh thank God you just saved someone 26 cents! lol
OK I just changed all my lens caps to .49 cents, happy?
As far as diodes, not many sellers give diode warranties, I don't either. I have no control over what is done or how a diode is handled once it leaves my hands. I've sold many a diode to many a customer that are still running 2 watt builds strong. I also warn about the shortened life of the diode at that power level.
What else? Come on, really? No wonder I don't post here much, too much hostility toward people that are not in the click.