the last 3 models
F3-17066CL8D-4GBPS CL 8-8-8-24
F3-17600CL8D-4GBPS CL 8-8-8-24
F3-18400CL9D-4GBTDS CL 9-9-9-24

are not still in stock as i know, maybe you have to wait 2,3 weeks