The power steering pump is not hard to replace, and it is not difficult to find. To get an idea of the repair steps, try the 'How-To-Guides' feature on this website.
Try the many on-line auto parts sources, such as; www.RockAuto.com or www.autopartswarehouse.com. For example, they (Rock Auto) list the power steering pump for around $205.00 (including core exchange) for your vehicle.

Whether there is any limit depends on the service, the recall, and the manufacturer. You might check with the local dealership directly about a particular recall notice to see if there is any expiration date.

Typically, yes - most recommended service intervals for the shocks and struts are around 60,000 miles. Try the many on-line auto parts sources such as; www.RockAuto.com or www.autopartswarehouse.com - to name a couple - for the replacement parts. You may also try the 'How-To-Guides' feature on this website for how to check for worn shocks and struts.

It sounds like the steering joint is bad. Check the steering column connection under the hood - from the firewall down to the steering rack - there may be a broken or faulty steering u-joint or connection.

what kind of question is this?

Replace CV joint, this is the cause of clicking noise specially in turns.

Take your pick

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Given the tire wear description, there is also one other question - how many miles on the struts? If more than, say 30-50,000 miles - then probably time for replacement. You can purchase new struts from one of many on-line auto parts stores, such as; www.RockAuto.com or www.autopartswarehouse.com. They (RockAuto) list the front struts from around $57.00 to around $135.00 each.
Your call - but $800.00 sounds like a bit much. Try to find a repair shop that will let you purchase the struts and then replace them for you - to save a bit of money. The repair cost should include the struts, the labor, and a wheel alignment. To locate repair shops in your area, try the 'Find A Shop' feature on this website.