His profile shows he's in Atlanta GA. Those prices are "throw old part away and replace them with new" prices. I'd find the local VW - there's about 5 in Atl alone. You can actually replace a broken valve spring without even removing the engine. I'd think $150? Most trans leaks are rear seal (then the pressure plate gets contaminated and slips) or if common VS swing axle - the axle boots leak (another $150). I'd send your carbs off for rebuild - $1900 is double or more new dual carb prices.
https://www.thesamba.com/vw/clubs/index.php