Being a cheap and a avid thrifter, I tend to accumulate too many similar ties. I'm thinking about get rid of some, but I can't decide. Do you think redundancy is necessary?
Is this quantity of grey woven ties an overkill?

You are right. In fact, I mostly wear odd trouser and a blazer or a sportcoat, grey ties see very little use, since I rarely need to wear a suit. I think I'd better just keep the good ones (I've got all of them for cheap) and donate the rest to charity. I'll expand my already big selection of casual ties, the ones that are better worn with more casual jackets and trousers.
. I don't criticize that strategy, but I also maintain that it's perfectly acceptable to have clothing beyond what is needed, assuming of course that you are not extending yourself beyond your means. Once this is accepted, the answer to this question lies in how much pleasure you get from having a variety of items to wear, or even just own. If they sit in your closet and you don't care about them or think about them, then get rid of them. But if you enjoy them, it is not a personal failing to keep them. It's OK to enjoy building and having a tie "collection" as long as you understand it and enjoy it as such.
It is just a part and I've already donated some. I have even more striped ties and some knits. I'm keeping the one I wear the most on a separate hanger (I really need a proper tie rack) and I noticed that I never wore some ties. I'm starting the process of selecting the ones I want to donate or sell. I don't worry too much about costs, since I got all of them from thrift store and the whole collection probably did cost as much as a single tie bought from a retailer.
I have around 30 ties in varying colours and the bigest is around 3 inch wide at the widest point. Some are plain but most have some kind of patern on them, usually microdots. I only have around 3 striped ties and these tend to be large patterns. I have a thing for plain knitted ties at the moment. I generally go for a pocket square with a complimentary colour to that of the tie, sometimes the same colour but not the exact same shade.
I would hazerd a guess that you wear quite a lot of pastel coloured suits, typically linen?

. I don't criticize that strategy, but I also maintain that it's perfectly acceptable to have clothing beyond what is needed, assuming of course that you are not extending yourself beyond your means. Once this is accepted, the answer to this question lies in how much pleasure you get from having a variety of items to wear, or even just own. If they sit in your closet and you don't care about them or think about them, then get rid of them. But if you enjoy them, it is not a personal failing to keep them. It's OK to enjoy building and having a tie "collection" as long as you understand it and enjoy it as such.
I wear pastel colored linen in summer, but as sports jackets, not suits.
I almost never wear suits, I just like grey ties as objects and always find them cheaply at thrift shops. Since my closet space is quite limited, I need to prune my collection a bit.



They all are sublty different, but the patterns are so small that the differences are barely noticeable. I have so many because I often find better ties and never get rid of the low-quality ones. It is about time to clean up my collection and add some variety. I just have striped ties, some knits and some wovens, I completly lack paisley and other print. I realize i have some ties I've worn maybe once, which doesn't justify keeping them but I have them in my closet "just in case". Which is a bad attitude for thrifter, since it leads to collecting lots of crap.
PS if someone wants a grey tie, just let me know.