How much does removal of silicone implant on nose cost?

The cost of removing an implant depends on whether you want to replace another implant at the same time or just remove it. Oftentimes the removal can be charged as part of the replacement.
If you just want to remove it, I think the cost would range between $1000 to $4000.
Thread lifting can be done at anytime.

The cost of a nose job will vary based on your geography and the experience/proficiency of the surgeon.  While it's not necessarily true in rhinoplasty you get what you pay for, typically the top surgeons in a given geographic will command the higher surgeon fees.  As a patient it's important to do your due diligence in researching rhinoplasty specialists to determine which prices are reasonable, and which really are "too good" to be true.