You may well find that the 'compatibles' that are available, could well be made in the same manufacturing unit as that of originals. Re-badging is not unknown, with certain products in the computer industry.
But you also need to be cautious, because some might come from 'refurbished' or poorer quality control sources. Whatever the case, see if the item is supplied with a genuine warranty of satisfaction (terms and conditions?), and that should be a reasonable but not necessarily a 100% safeguard in considering a purchase.