Well it's pulling a bit closer into reality.

If the Bayliner site discloses a $997 destination charge, then the
actual MSRP is
really about $11k rather than $9995.

Add 8.8% to $11k, and you're up to within a short spit of $12k.

They should be able to account for that last $875 somewhere, maybe its
a charge for bottom paint, custom pinstripes, a fancy wax job, etc.
Odds are almost 100% that whatever is being charged out at $875 cost
only a small portion of that number...BUT, that said, the dealer needs
to make a profit to stay in business.

There are two perspectives available in a situation like this. The
first is to get all hung up on the horrible reality that the boat
dealer sells boats for more than he pays for them and go into some funk
because somebody will make a very small profit along the line. Not a
suggested approach. The second is to simply compare all the new boats
you can buy for $128XX out the door, (or whatever you budget dictates)
and pick and choose between them to get the one you like the most and
will serve you best.

As you have noticed- there is almost *no* competition in the Under-$13k
out the door for new boat, motor and trailer category. Almost reduces
the question to do you like it or not and do you choose to afford it or
not, as the list of competing offers won't be especially long.
One reason you won't run into a lot of wheeling and dealing on that
model is the margins are so darn skinny that the dealer's bottom line
won't change much regardless whether you buy the boat or not.