I did see this model but the price gap between a L18050 and the T3100X is enormous, which defeats the purpose of using dye inks to reduce cost. The price is higher than a P900.You may have a look to the Epson T3100X which is an Ecotank printer model with dye inks.
Indeed, the bottled inks are significantly cheaper.You are comparing just printer prices and do not include the cost of the inks over the lifetime of the printer, inks in bottles for Ecotankprinters are much cheaper than ink in cartridges.