Your problem is not with the hinge on the door - that has the pin. Your issue is with the hinge on the door opening. With the door hanging on it, it will be a pain. Normally even when fitting new doors that half of the hinge is not messed with.
Looking at Mopar Parts Giant listing - The two door hinges are $57.63 each or $115.26 for two. The upper body half is $60.12 as is the body lower half for $120.24 or a total of $235.55, plus shipping and sales tax.
The pins themselves are only $16 (for the door half of the hinge), however unless you have a press, you can't get the old ones out. I tried that to refurbish a hinge on the TJ. After two days of trying to drive the pin out, even with a 4# sledge and a large vise I gave up and ordered new hinges (they were still available then).
You may still need the bushing kit. The factory metal bushings are listed separately further down the parts list for $16. Not clear if that is for one or a pair as it has images of both. I would NOT go back with the metal bushings since you have had issues, so you can add $30 somehting to them.
If you want to try to get the door off, again, loosen but do not removed the retaining nut on the bottom of the pin. place a piece of two by four under the door bottom, making sure the wood for the block is below the edge of the door (so you don't damage that as others have done). With a jack put upward pressure on the door. Lubricate as you desire the joint of the hinge to try to get some lube into the bushing. Put enough pressure on the door that you are actually picking up the Jeep on that side.
The reason you are not completely removing the nut, is that when the door comes free it will shoot upward. There have been many comments by WF members of what happened to their doors when that occurred. Some had a rope through the open windows up and over a rafter so it wouldn't fall, others had the door hit something and incur damage. Again the reason the nut is loose is so the door will not come up suddenly, but should with a bit of time come loose and move upward. Hopefully at that point you can take the press off (lowering the jack) and be able to lift the door off. You may have to wiggle it back and forth.