As a Christmas surprise, Tecnobytes offers reduced prices on its proven products. This is your opportunity to purchase the Powergraph light and Double RAM cartridges for a lower price and a prompt delivery.
The Powergraph light sells at 148 U$, the Double RAM cartridge at 98 U$, both including world wide shipping.
You can combine both products to save some shipping cost.

Relevant link: Tecnobytes Homepage