Is it advisable to replace all ball joints ? Or is it adjustable

I'd replace them.
All of them.

What brand are good? Moog? OEM ? Spicer? Average cost?

Moog if you can afford em.

How much they usually go for. All four right?

Do I have to replace ball joints at same time I do tie rods? Or can I do tie rods now and wait couple weeks to save up money for the ball joints?

I see a listing on eBay for alloy USA set of four pcs ball joints, 200 bucks? It say its designed for lifted jeeps. What do anyone think of that one?

You can wait.. no experience with the alloy USA ones

So bad ball joints won't affect or damage the new tie rods?

Shouldnt have enough of an effect on them I wouldnt think..just replace them as soon as your able to.

How do I check if the ball joints are bad? That pep-boy location have tried to rip me off in the past, so I rather to check it out before pulling the trigger on new parts

Bump. Do anyone know how to check whether the ball joints are good or bad?

Jack up your front end. Make sure both front wheels are off the ground. Then take something like a tube or pry bar and shove it under the tire and go up and down. Check for play.

Thanks. I ll check this weekend when I do the tie rods.

Do I stick the pry bar under the tire itself or under the knuckle ?

Under the tire. You'll be able to see the play on the ball joint when you pry up

Thanks ill do that