Unfortunately, it is hard to give any input based on this GIA report and photos, especially for a "crushed ice" cushion cut.
I hope other cushion experts share their knowledge.
Is this the style of cushion you are looking for? What you posted is a very particular kind of facet pattern. Some like it, some don't, and many don't know the difference.
Re: cost, Its high in terms of price but not insanely high.
For example- Here is another modified cushion ( so more fragmented vs. broader flashes, similar to what you picked previously) still super white and high clarity. Also elongated. And it's 1K cheaper
Im not saying this is the best diamond out there, but it can help show where you are in terms of a value proposition. So if you are looking for a deal- no, what you are showing is not a deal. If you are looking for the biggest and best diamond- no, the one your picked probably isn't that either.
Can you post your budget, minimum color and clarity you need, and why you are searching for a cushion? That will help guide people to helping you.