Shaggy6969, justjoseph's is right to link you to 501stsithlords.com forum.
Look in the on-going sales thread for BrotherVader's converted Vader sabers (new led-insides w/ removable blade) [ HERE ].
He does a great job and I have one of his ANH conversions.
What you'll need to know/decide is which Vader you're going for (pre-armor Vader, armored ROTS, R1, ANH, ESB, ROTJ) b/c that will determine which hilt you'll get Brother to convert. The hilts are 2005-2007 Master Replica (which was bought by Hasbro and now are called FX, then currently Black Series). They are about $375ish converted
Sometimes you can find people selling the un-modified/un-converted/off-the-shelf Hasbro Blackseries Vader sabers (most of the time it's the ANH one) on Craig's List and ebay or similar for about $150-$250.
That other saber you have there, the Anakin Attack Of TheClones (AOTC) silver-hooded saber that Anakin accidentally destroyed in the movie, is a much tougher one to get and $$$
If you're not looking for 501st approvable sabers, there are lots of 3D printed hilts you can get if you just want a hilt. If non-approval is the route you're going for, a cheaper alternative for a lit saber is to go with a "Hasbro Ulimate FX series" which is a cheaper version of the BlackSeries sabers. They are like $50ish new / $35ish used. They are much better than a Rubies.
It all depends on what you wanna do with the saber and what you want it for. If it's for fun, or for serious fun, lol.