LX-2 is for around 2 lack INR and it runs for maximum 7 passage because it is activated by culturing in serum free media. LX-1 would be better because it is SV-40 transfected and runs for at least 25 passage. you can get it from chinese academy of science or other chinese institutes or you can request others who are working on it.
I got to know that LX-2 can be used till 50 passages and these are selected from LX-1 cells by culturing in low serum/serum free media. LX-2 are widely used so if you want LX-2 cells you can write to Dr S L friedman from mount sinai institute.
If you are looking for primary cells, then I would suggest you to visit Kosheeka's website. They have a range of disease specific cells as well. Hope this helps.