Well, since I pulled the trigger on this in January, I figured I'd share my experience with Ty and DIYCarbonBikes.
January 14th - I placed my order, Large GRA700 Matte finish.
Tuesday, February 9th - Package arrived well packed and in the time frame quoted, but it was a gloss frame and not the matte one I ordered. I wasn't too concerned with it at the time and didn't mind it. When I opened the package and was getting parts together, I noticed I had duplicates of a bunch if items (headsets, seat post clamp, bottom bracket, etc) After laying everything out, I didn't have a front axle. I offered to send back the duplicates to Ty, but didn't say he needed them. Reach out to Ty and tell him my situation.
Friday, February 12th - Ty replies and apologizes and won't be able to check until Sunday about stock on the axle.
February 12, 15th - I send replies about the axle, no reply.
February 15th - Ty replies that he cannot find the axle. He sends me a link to aliexpress that this is the axle and nut that I need. I asked if he ordered today and when I would get it, but then tells me he sent me the link for me to order. He tells me he will reimburse me for the purchase of the axle with premium shipping.
February 17th - Submit paypal invoice that I paid to Ty.
February 18th - I ask when I would receive my refund.
February 19th - I get the bike back from my local shop and start dialing in my fit. I noticed the top tube is short. Based on the measurements, the frame I received was a medium, not the large that I asked for. I send a photo showing how the top tube was short. He claims that based on my height and what I normally ride, it "should work or me". I ask Ty i he wants to give me a refund for the bike as well as the front axle, or send me a new one in my size/finish that I asked for in January. No reply.
February 24th - I follow up asking about the refund of the axle, no reply.
February 26th - I recap our current situation and say that I will have my credit card company refund me my money if he will not work with me.
February 27th - Ty replies and asks me about how much the axle is, Asks me nicely to not do the chargeback on my card and tells me that when you do a chargeback, the customer loses their money as well as the company.
February 28th - I forward the invoice I paid for the axle.
March 1st - I still don't see the refund, Ty replies that he sent it. Hits my credit card.
March 8th - I receive the axle Ty told me to order and it is wrong, It is too long. He tells me it doesn't look wrong, and tells me to ride it and see if it shakes loose. No way this is safe and I tell him it's wrong, and I want the right axle.
March 9th - Ty says that the axle isn't right and has me place an order for a new axle on their website as a warranty claim with a warranty checkout code. Ty tells me that it should be 15-30 days with standard shipping. I ask him to expedite my shipping. He says he will try and get that upgraded.
March 17th - I follow up about tracking since I have not received anything. He tells me that they are catching up a bith with the factory holiday and his assistant was on her honey moon. Says it should ship in 3-7 days. He tells me that they created a new system. I tell him this whole transaction has been extremely disappointed and he replies that he is disappointed too.
March 22nd - I ask about axle shipping as the tracking still hasn't been sent to me. It's been 13 days since I placed the order. He explains to me that these axles are more particular. He is having to custom get the one I need so we make sure I get the right one this time. Apparently the fork is our 2019 order model, so its taking more time to get that axle. The one I got early fit the 2020 models, they are readily available.
March 23rd - I receive an automated email with tracking for the axle.
April 12th - Tracking shows that it's in my origin country, but I haven't received it yet.
----
So I have the wrong finish, wrong size frame, incomplete bike collecting dust in my garage after 62 days. The frame "looks good" but that is all I can say about it. I don't even know if it fits.
No offer of a complete refund, no discount for the delay, nothing to make the situation remotely right. I've received better customer service on AliExpress overseas then a stateside company. I wanted to work with DIYCarbonBikes because I figured I would have better customer service, faster access to spare parts and no language barrier. I cannot suggest using Ty and DIYCarbonBikes.