Whiny noise in 1st gear.

[geeang]

you got any idea how much just to change the input shaft bearings?

I can't remember exact prices, but you'll need new bearings + seals (~$90 each bearing from Honda if I remember right).
You'll also have to pay for labour to pull off the gearbox, take gearbox apart, assemble with new bearings, put gearbox back in, fresh oil.

And this is assuming nothing else has been damaged, when I had mine done I got new bearings + input shaft + 1st gear + new seals + labour, and it cost a pretty penny.

Budget for at least ~$500.