Arch GPRS Kit discontinued


I see that Arch GPRS Kit has been discontinued. This device was perfect for me. I now there are alternatives, all of them with more memory and even better, but they are expensive. I’m developing a product with this device and its discontinuation is for me a big inconvenient. Are there alternative with similar features at a similar price? If not, and assuming finally developed my product, could request the manufacture of a batch of Arch GPRS exclusively for me? In this case, what will be the cost assuming an order of 20 units?