I think it is a question of cost at that point and the ride height you want.

pretty much everyone says it runs around 150 to get springs rearched.

I happened to be looking for springs recently too.
There appear to be 4 places you can get new ones from that are oe replacements.
JR springs
220 for a set
1 year warranty.

mopar performance
which is what firm feel sells.
summit would get them to your door for 224 for a set.
order just the lefts.
no warranty.
Firm feel sells them for 260, but basically will do the qc for you and get you a good set. They run the risk since mp won't take them back even if they are doa.

Springs and things. Site sponsor
220 for standard set or 250 for a plus 1 inch arch.
Also 1 year warranty.

And Dayton springs
seen on ebay for 195 a set. 1 year warranty.
about 245 with shipping.

All in all 100 bucks more for new leafs.
Just depends I guess on if there is anything else wrong with yours. like cracked leafs or rusty or whatever.

you can also step up to "better" springs.

Eaton has them for around 225 each.

hotchkess (sp) sells them for around 600 a set, but are 1 inch lower.

Those are the only makers I have been able to find.