I really don't think you're going to have much luck finding either one for $50. The cheapest that you will find a N. hamata is from Wistuba, but they are very small and need to be babied for a bit. Not to mention that with shipping and paperwork costs it makes getting just one quite a bit pricier.
www.droseragemmae.com has hardened off Wistuba clones for sale, but with shipping it will cost you about $85. There's always Ebay, but they never go that cheap from what I've seen. The N. jamban is a bit harder to find and I only recall seeing one or two listed on Ebay in the last year and if I remember correctly they were not cheap either. Wistuba also has them but they go for $80 euros which is over $100 US dollars. You may be able to get one by emailing Tony at
www.exoticplantsplus.com, but he would most likely have to add it to one of his Borneo Exotics orders, so you would be waiting to get it for quite awhile and I don't think that it would be that cheap considering the price Wistuba has them going for. Tony makes sure that all of his plants are in tip top shape before he sends them out. I've already waited over seven months for one of my reserved orders, but it was well worth the wait when I saw the quality of the plants. I have three N. hamatas, one Wistuba clone and two seed grown that I got from forum member BigBella on Ebay, and I paid well over $50 for all of them except for the Wistuba clone because I placed an order that was big enough to get free shipping so that one cost me around $50. Here's a link to a page on Exotic Plants Plus that shows a tray of N. jamban that he got in and their progression to being ready for shipping.
http://www.exoticplantsplus.com/WhyUs.htm
