that’s true; Mr. Freeman certainly sells quality whistles, and at much less than $75. i have his mellow dog d; i can recommend it, and i think it goes for about $40. 
that being said, i’ve been hunting around for a “quality” whistle myself. i don’t know what that means really, and i think you’ll also find that “quality” has nothing to do with the price.
what you want to do is find out what kind of whistle you’re looking for: do you like chiff or a pure sound? a woody resonate tone, reedy, do you like backpressure or not? do you want to be able to “lean into” a whistle or would you prefer an easy blower? is volume a consideration?
if you have an idea like that, people can give you more helpful suggestions.
then… all that being said, i’ve asked a lot of people on this board what whistle they play and they all give the same answers: Burke, Copeland, Abell, Sindt.
Burkes cost $200 for a new whistle, Copeland’s are harder to get and seem to go for around $350, Abell’s cost $450; Sindts only cost $130 but currently there’s a 6 month wait list to get one new (i’m on it myself
.
i can also recommend Reyburn; i just got one myself a c/d set used for $120 but new the d whistle is $170 (you might consider the c/d set; it’s $200).
if you would prefer to only spend $75 or so, since you don’t know what you want yet, there are a few available in that range… notably Black Diamond and Syn whistles. i think the black diamond d goes for around $80 and the Syn aluminum is $55 or so. i’ve heard (haven’t tried one yet myself) that the Syn’s breath requirements are tricky, but people seem to love them (search this board when you have time). Also, there’s Dixon, but i haven’t myself had a good exp with them (nice high octave, weak bottom end–but most people seem to love the trad, and it’s only about $25). Ethicwinds (Nick) makes aluminum and copper whistles in the $50-65 range that people seem to enjoy; i’ve ordered a g whistle from him that i’m hoping to try out soon. 
if you can spend $200, get yourself a Burke session bore brass d whistle. then if you don’t like it, you can trade it on this board for something else (i’ll trade you something for it myself
. i’ve traded a lot of whistles with people on this board, and it’s a nice way to try out whistles without shelling out a lot of money up front. (actually, i traded one high end whistle (a goldie) i traded a burke composite whistle for as part of a deal to get a flute
.
oh, also, if you decide you want to try a whistle made out of wood (for that woody resonate tone
then gene milligan makes a mean whistle for only $185. (you can read about them on the thread on this board.)
good luck. 
eric