Is this Seiko worth it real, fake or plain bad?

The seller seems strange and it looks more 60s than 70s or 80s as he says. Also thoughts on the design https://www.ebay.com/itm/122057319824

Where's the caseback? That should pin the date down. I can't help on the age without it because I've not dealt with a Seiko 5 any older than 1991.

N
no case back picture

I'm not an expert in Seiko 5s, but it looks like it should have a bezel, and it shouldn't have a crack in the case at the 4 o'clock marker...

You think fake trash?

Not fake but not good condition either. My understanding is that you don't have a lot of money just yet. What is your budget? Do you have the chance to save up some cash? If you want to collect vintage watches but don't have much money then you could try brands such as telda, who made good quality Swiss watches that are reasonably priced. Tissot also have some vintage watches from the 70s that can be had for a few hundred pounds. The other option is to save over a longer period and in mean time try to learn as much as possible. The WRUW thread is a good place to look to give you an idea of different styles of watches, eventually you will have a better idea of what you like and don't like.

This right here should hint you well enough to stay away from it.
Item location:
LUCKNOW, UTTAR PRADESH, India

Many/most watches with more or less attractive prices from India are poor redials, frankens, marriage watches, etc.
You can find that watch easily throughout the internet for around 50$... I would say keep looking a bit longer and you'll nab one.

The crown is a replacement and it's a wrong one, by the way...

As actually shown in this example dial reads 7S26 at the bottom, so at least the dial was originally meant for a 7S26 movement. Movement shot shows a 6619a, and the item description also states 6619a movement

You can get many a good Seiko watch for sub-$100 but that is most certainly not one of them. They made some pretty solid ones even mid-range back in the 60's.

Not a nice watch but if you want to spend a bit of time immersing yourself in what Seiko's from this era should look like then have a look at the antique watch bar site. Lots of models from Grand Seiko to Orients and good straightforward appraisal of condition .Prices are higher in general than a lot of private e bay listings but it offers a good starting and reference point. Find a model you like then you can either buy from the site or try and track one down using this as a visual reference point. The problem with Seiko 5 are there are so many different variations dependent upon markets they were sold in plus some of the movements were also in more desired models so this pushes the price as these are sought out for donor use
Seiko's are a good starting point to vintage watch collecting and the 5 which came out in the 60s were designed to exhibit 5 characteristics

1 Automatic winding
2. Day/date displayed in a single window
3. Water resistance
4. Recessed crown at the 4 o’clock position
5. Durable case and bracelet

with the aim of producing a robust legible watch that was affordable. These traits mean that there are a lot of good inexpensive original watches around but it also means they can be chopped around to good effect to produce a watch which in all likelihood works but has little authenticity