That's too bad. The 4080 was a real bargain. But the 4180 ($295) supplants it, so I guess that is the new cost of an accurate 3-axis gaussmeter. There is a wide selection on Lessemf.com.
One-piece single-axis meters are a pain to use though one like the MSI-95 has a separate flexible sensor and much easier to use (see magneticsciences.com). [disclosure: I designed it years ago but get no royalties].
There is a cheapy that is unusually accurate for the price, about $25. A one-piece single axis with a range only up to 10 mG with anlalog dial and buzz. Small, cute (Lessemf.com).
Karl