YFI has been the greatest story in the crypto market this year. The earning is transparent with very little outstanding circulation. Don't get too focus on the high price, as there is only 30000 total supplies out there and alot of those are locked with various reasons (e.g. ygov, cream). With the yield offering by crv, it probably justify the price. There are also many innovation coming for yearn. But due to the shortage of supply, one may get lucky with the sharp drop in price, so grid trading or limit order for a very low price may be worthwhile to get into position.
Stay safe and healthy~