Make sure Amazon is an approved distributor for Yaesu. I have read that with some brands, with some merchants, there can be warranty issues for non-approved distributors. I don't know for the specific case of Yaesu and Amazon though.
Another place to consider buying from is HRO, they are definitely an authorized distributor.
https://www.hamradio.com/detail.cfm?pid=H0-007323p.s. The "Signal Stick" antenna from the outfit below is well regarded in my area. I am very happy with its performance on both the Baofeng and the Yaesu. Note: For a Baofeng your need an SMA-female connector, for the Yaesu you need an SMA-male. You can also just pick one or the other connector and buy an adapter so the antenna can be used on either the Yaesu or the Baofeng. The website also sells these adapters, but IIRC, you have to search around a bit to find them.
https://signalstuff.com/antennas/p.p.s. - The antenna website also sells a little rubber washer you can use with the antenna. You don't need that washer for an FT-60R.
p.p.s.s. - (is "p.p.s.s." even a real thing?) The FT-60R at Amazon shows as $189 with $7.60 shipping when I look it up. It is $149 with free shipping if bought directly from HRO. It appears that the Amazon seller
is HRO, and I don't know why it costs so much more to buy it through Amazon than direct from them.