I have a pair of 5700's with Zephyr's and a TSCe I am selling but not exactly at your budget.If you are ok with Ebay, you should be able to find a 570...

Hi All,Considering this kit for intermittent work GNSS work. Any users?Hard to tell if the board is L5 & Galileo ready or if it is L1/L2 only.Look...