Problem: How to sort or order custom field value having dollar sign and commas as number field value using views sorting
Solution: You should use WordPress standard filter posts_orderby to remove dollar sign and commas from text filter value and sort it as numeric.
You can find proposed solution, in this case, with the following reply: https://toolset.com/forums/topic/remove-dollar-sign-commas-from-numbers-field-values/#post-908752
This is the technical support forum for Toolset - a suite of plugins for developing WordPress sites without writing PHP.
Everyone can read this forum, but only Toolset clients can post in it. Toolset support works 6 days per week, 19 hours per day.