As the title suggests, post your cheapest and most expensive watches and let us know why they have a place in your collection.
Prize for anyone who actually posts an Alpha and an Omega (disclaimer: prize may be rubbish/imaginary).
I'll go first as no-one else had seen this thread yet.
Casio WV57H - bought for a few quid from a charity shop but probably would have been the cheapest even if I'd bought it new. It's a great beater with spot on atomic accuracy and a nice big display.
Rolex Explorer I - a long time grail which I found myself able to afford recently. It really is the perfect watch IMO with a rugged, classic style that has stood the test of time but which is also dressy enough for smarter occasions. It's also the perfect size for my skinny wrists.