Some people would consider this disposable, and others would pay more than it's worth to get it serviced. It's really up to the owner to decide. I get the occasional Seiko owner ask about service costs, but they usually disappear when I give them my pricing (using Seiko because I really don't get asked about Orient's very often). Not that I'm particularly expensive, but these watches just don't have a ton of value in most cases - of course there are exceptions. For watches like the Seikos with movements like the 7S26 you are better off to either get a new watch, or get a donor movement to swap for the old one. You can buy a movement for less than I would charge to service it. If it's a vintage model, then that's a different story of course, and I have serviced a bunch of vintage Seiko divers and chronographs.
Some watchmakers place a higher service price on higher end watches, and offer less expensive prices on cheap watches, which to me makes no sense. The only real justification I can think of is if they screw something up and have to buy a new part, it will cost them more to get themselves out of trouble with an expensive watch. From a labour standpoint, the cheap stuff is just as time consuming, if not more so, than an expensive watch would be.
I service watches often that are not worth the money I am putting into them, but that is usually for sentimental reasons, such as a family piece.
Cheers, Al
