I've been collecting aladdins since about 2016. Info on aladdin lamps is seen only on a few web sites.
Ed gave some great background info that I didn’t know.
Ed mentioned the two best websites; both probably run by the two most knowledgeble aladdin experts in the world. http://aladdinlamps.com/ is a web site with new lamps.
The best live forum I've seen is found if you do a seach for facebook aladdin lamps knights, should come up with about 2,400 members. That membership has been climbing. It is run by aladdin-us.com where they are really great people, willing to help you with any aladdin need.
Hidden in that facebook forum are truly great experts and great collectors. They go to some sort of regional events where they can buy and sell. The also have an annual event. They are held every now and then but I haven’t figured out how to find out when. Just ask some questions there. There is somebody that knows the correct answer.
ADDED - you don't have to be a member of facebook just search using the keywords above and can see what the forum is doing currently. Can't post anything but can see what they are doing. END ADDED
That upcoming aladdin collection auction mentioned by macburner is truly a rare event where some outstanding lamps will be sold. The solitaire which is being sold is one of the ugliest lamps they made, only 1000 made usually sells for about $1,000.
Of course, you can pick up the aladdin lamp book that tells about the lamps that were made. I’ve met two great collectors at an auction and they let met get some lamps without them easily outbidding me just cause they knew I wanted them. I got a great yellow vertique with a great yellow shade that combination is really spectacular. They could of got it easily outbidding me, I really had no money.
If you want to collect aladdin lamps; there is no real resale value in metal lamps unless its a model 1. Glass lamp values can be seen on ebay. The great thing about aladdin lamps is that the wicks and mantles are still available so the lamps can run.
As to new remanufactured ones, usually the have a date on the bottom. New ones are made and there is a web site that mentions counterfeits. Look carefully at that so you won’t buy a fake.
As to costs; getting an aladdin lamp to run is pretty pricey compared to a coleman lantern.
If you can get one to run under $90 you have done very very good. I priced my collection; it averages $122.
Some people only collect the bottom font. Others may collect the font and burner; others collect the whole lamp. I believe a lampshade can make an aladdin lamp look great. Expect to pay a starting price of $20 for a shade.
Cost break down,
Need the font, cost varies $30-450 on up.
Flame spreader $15 plus shippiing.
Chimney $28 plus shipping
Wick $20 plus shipping
Mantle $15 plus shipping. Add these up and you get $175 without the shade. For a shade, add the shade holder $25-35 and the shade at least $20 so it can get very expensive. Most antique stores price the lamps at $125-$199 with our without all the parts.
However if you pick carefully, the aladdin lamp you choose will be a thing of beauty; easily more beautiful than 99% of any coleman lantern. Can you see I still like aladdin lamps.
Of course Jim, you knew most of this stuff; I just included it for others that didn’t know about it.