Welcome to Chiff and Fipple.
Nothing wrong with the Yamaha 300s - good bang for the buck. I like them. I play them myself - from the 'nino down to the bass. I do own a number of nice wooden recorders too. I do like wood.
I should first ask you what the motivation is to purchase that particular alto? Is it just the price? Is it the design? is it the reputation of the maker?
I know of no reviews of that particular alto from any recorder forum or publication. And I see you have asked the same question on other forums.
I have not played the Frederick maple alto. So take this advice with appropriate seasoning.
I have played a couple of the Frederick ABS recorders which appear to be the same Chinese made product branded with many names throughout the world like Smart, Woodi, Ferris, etc.. I have owned a number of those instruments. I have also played a couple of the maple soprano recorders sold under those brand names as well as others like Steinard, Schneider or TS-ideen. They were disappointing IMO.
Similar recorders are also available with no name - so you can have it engraved with your own name too.
But $38.95 is a tempting price for a wooden alto. Isn't it? Takes me back to mid-1970's prices. If you are compelled to go that direction at least take them up on the "Make Offer" option and get it for as little as you can.
I would suggest buying a Moeck Rondo (the new design), a Mollenhauer Canto, an Aura from AAFAB (I like the Bubinga model BA5B) or maybe a Kung Studio alto. These are all well known altos from well regarded and long lived makers - that have faces and names and addresses. In the case of the Kung it will not just be "inspiration from Switzerland" as the Frederick marketing blurb states but it will be conceived, designed, manufactured and voiced in Switzerland - no bull.
One of the reasons that the Yamaha and similar recorders have prevailed in recent years is that they are just better recorders than the available inexpensive wooden instruments and far less trouble to maintain. I grew up playing student quality pearwood or maple recorders from makers like Adler, Schreiber and others. They were the most affordable instruments available and we made them work (but we bought better instruments when we could afford them). We put up with a lot using those old orange finished recorders as far as timbre, tuning and upper register playability. (I still have a couple of those old logs.) Well designed ABS recorders (and the Yamaha particularly) changed all of that and seems to have put many of those old European recorder makers out of business. There is little evidence so far to prove that the latest generation of cheap wooden recorders are any better than (or even as good as) those old wooden student recorders.
If you are looking for something that sounds more authentic (I would hate to say more "woody") than the sound of your Yamaha you could also look into either the Aulos Haka alto (A709B or A709BW) or the Zen-On Bressan alto(1500 model) . Both are also made of ABS as is the Yamaha but they have a more period authentic voicing, or so they say. I own both. The Zen-On sounds quite good, remarkable to me, actually. The Haka sounds nice too and it plays very well IMO. Like the Yamaha they will last forever (with some care) and they will not need to ever be re-voiced as a wooden instrument will. And, surprise!!!, you can read reviews or hear them played on YouTube by someone other than those that are importing and selling them. They are known and accepted instruments.
That's just my view. If you do buy the Frederick let us know what you think. (Yeah, I am curious - just not $40 curious.)
Maybe someone else here has had a turn on one of these.
Feadoggie