I have a pair from Woolworths £15 maybe 15 years of careless use. Not so long back I took them apart, cleaned and polished bits, knocked off 'sharp edges', and used some watch oil on them. They became so much nicer to use. They do run the battery flat after a couple of months so I buy a bunch of cheap spares. They don't like any moisture at all. I tend to reset the origin every use. I love em.
I splashed out on a pair of iGaging. They are a slight step up. No need to fettle so these feel like the polished and oiled Woolworths right out the box. Had them a year and have not replaced battery. I don't think I have reset the origin either! You can get some that show fractional inches but these are not those: https://woodworkersworkshop.co.uk/products/igaging-origincal-ip54-digital-caliper-absolute-origin-0-6.
I'm left-handed and don't have a pair of left-handers. I get stupidly annoyed having to pay extra for left handed things! Not as annoyed as I get looking unsuccessfully for left-handed files! If M-DRO did a flash discount on left-handers then I would buy some 
By the way – a small amount of fettling can transform other super-cheap stuff. I just got the cheapest linear slide rail off Amazon. I took it apart to cleaned it (see youtube) and go over it with a diamond hone, and the difference is amazing! It doesn't fix the 1mm vertical bend over 400mm length but that should be sorted by suitable packing. And you can tell how they manage to make em so cheap.
Edited By jaCK Hobson on 28/02/2021 08:53:13
Edited By jaCK Hobson on 28/02/2021 09:04:28