A potential problem with forgoing an official rebuild from the manufacturer and going with a third party retip service instead is that if/when you really do need a rebuild (for the other internals, etc) the OEM might not want to touch it if a third party worked on it before.
I have two Lyra Atlas Lambda (SL + Mono) and accept that I am on the hook for costly rebuild when the time comes. I might do a 3rd party retip with a $3K cartridge, but not with these.