How much does it cost to put an oil dipstick tube that has come out back into the block?

There is a small shield (baffel) in the oil pan that if put in backwards it will block the dipstick from going all the way in. You need to remove the pan and turn it around. The proper dipstick measurement is the full mark should be even with the bottom of the case or top of the pan.

rotate it and it will.

Do Not do that!! Anything foreign in the sump is a really bad idea.It way make its way to the oil pickup screen and partially block the flow of oil.This has the potential to damage your engine. At the bottom of the dipstick tube is usually a small bolt that attaches the tube to the side of the engine.I would remove this and see if I can fish it out then.Failing this you will have to drop the oil pan and get it that way.I know this may seem like a trivial thing but the potential is there to do a lot of damage.
If bits of plastic get past the screen and get into your engine any cost to get the stick out will seem very minor. good luck

Since the dipstick tube is a slide in fit, you will need to drop the oil pan to work the rest of the part out.
1) drain the oil
2) remove the bolts holding the oil pan (once they are all out, you might need to tap the pan to get it to release from the block-my brother's 97 camry was like this)
3) Remove the pan and look up for the dipstick tube end, spray it good with some WD-40, let it sit for a few minutes. The photo shows some pretty bad corrosion in your case.
4) with a set of channel lock pliers, begin to work the tube out. Take your time, you will be pushing out, not trying to pull the piece through.
5) once it is out, clean the edges of the dipstick tube opening.
6) Install new dipstick tube. ensure you have a good fit around the tube. otherwise, the crankcase pressure will squirt oil through.
7) Scrape off the old gasket from the oil pan and the face of the bottom of the engine.
8) lay the new gasket on the oil pan and begin to bolt it back on. Get the bolts in finger tight, then alternate torquing them down to ensure an even seal.
9) change oil filter and fill with new oil

No solution from me, Note: Sounds like your pretty familiar with the Positive crankcase ventilation (PCV). You said the valve is pulling a vacuum I am assuming it is from the intake manifold side correct? With the PCV was working sure seems like it would keep the oil from coming out of the dipstick tube. I am stumped as well, sounds almost like too much blow by from the cyclinders you already stated that with the possible broken compression rings?

make sure,to start,you didn't put the wrong dipstick (transmission or oil)in. Try,if the correct dipstick,removing the stick all the way out then twist so it faces the other way then ease it into its fullest making sure the end where you hold it from goes all the way too.

unbolt the tube from engine block,wiggle it slowly pulling up and it will come out and repeat process to put it back in

A lot of cars have these sticks. It’s best to dip first ting in the morning before the engine is started the oil would have settled by then. Otherwise when it’s hot leave it for an hour then dip it.

i assume you mean the stick that you see the oil level on not the tube that it sits in.it should be on the passenger side along the upper part of the motor.you should see the tube sitting there.if you mean the tube it sits in then under the car on the same side along the top of the oil pan you should see were the tube goes into the block.if the tube is broken then you will have to replace the tube making sure that all the old one comes out of the block.

Some times the tubes rot off. Make sure you look where the tube pulled off the block there's a small hole on the side of the block the tube goes into. If it rotted off you will have to replace it just make sure you get the other piece out of the hole.