Depends on you. Personally I would never spend crowns on something I can earn in game.

With that said, earning crafting writs is an endgame activity. You need to max out the crafting skill line to get the top level daily crafting quests. The number of crafting achievements you have (eg whole motif styles known) and number of traits researched will effect the drop rate of the rare master writs. Even on a master crafter it is rare to get a good master writ, so prepare to grind out dailies for a long time.

I recommend you make gold in game and just buy master writs from guild traders. Easy and reliable.

Stations are fun & useful to have at home (especially the dye station)

Crowns are too expensive when you want All the stations in multiple houses.
Writ vouchers path and don't forget GOLD!
I agree with Anita, you can save up the gold & skip the writs entirely
The going rate for the Stations themselves on Guild Traders is around 40K

I would use vouchers because they are not a lot (~35 per station) and if you drop a good writ (or if you buy one) of 100 vouchers you get almost three stations right there. Sure, writs are not cheap to buy, and the ones that grant a lot of vouchers are not cheap to craft, but if you are a little patient you can easily gather the vouchers for all the stations, and spend the crowns elsewhere. You can even just farm gold and buy the stations from traders.

yeah, it is like 3000 crowns per station and that seems crazy. I think buying the writs from the guild traders would be a goo route to go. So do I buy them from my own guild trader or what type of guild trader are you referring to?

Personally I used some writs for an enchanting table and a dye station for my Home. I might get an alchemy station at some point but IMO these are the only ones worth buying with any type of currency for your home. Most guild halls have access to the attunable stations or at least the standard stations. There isn't any reason IMO to place the standard stations in your home cause you can just jump to a city and use them there.

I agree that writ vouchers or gold are your best options. If you aren't yet able to get MWs and don't have the knowledge to complete most of them even if you do get one, you might be better off just buying them from guild traders.

It will take a while to earn enough vouchers to buy them that way, as you first have to get your crafts to 50, put the necessary points in them to be able to craft CP150 gear/consumables, and then start doing writs for a CHANCE at a Master Writ dropping. Even then, you may not have the necessary knowledge (trait researched, motif learned, etc.) in order to complete them. The consumable crafts are much easier to get into and it's easy to complete the majority of their MWs, thus the number of vouchers they award is quite low. Gear MWs can be much more rewarding, but often those high-level writs will require nirnhoned, legendary tempers, high-trait sets, and rare motifs.

I also agree that the stations aren't really necessary, but if you do want them for your home, I think that the best station to get is the dye station. This allows you to create outfits and dye costumes/armor without having to worry about the players who seem to have nothing better to do than stand around spamming spells in order to distract those working at the station.

Then, I'd think about the provisioning and alchemy stations. For me, they are convenient since I like to park my characters in my homes (for RP, though this adds load times when you need to get elsewhere). If they're low on food or potions, it's easy to just make some at home before I head out.

I do have all the stations in several homes, but that's largely because I wanted to have a crafting area in certain homes. It was also convenient when I had alts doing research, as I'd just log in, check their mail/research and log out. Of course, you can just as easily park your characters in the crafting area of a town and accomplish the same thing, with the added advantage of less load times if you're also wanting to do writs or dailies/quests with them.

If you want stations, then you're someone who likes doing it yourself, so the in-game methods should appeal more. If you're considering Crowns, then maybe you're not as much a crafter as you think.