How many coins, from POS, I can reciece with 1000 coins?
I am also interested in this. What's the daily/weekly/monthly POS payout per say 1000 DCR?
Simplified calculation - ideal conditions:
you have: 1000dcr
price per ticket (retargets every 144 blocks==roughly every 12hrs) - example: 14.8dcr/ticket + ticketfee (0.01) + txfee (0.01) = 15dcr/ticket
you can buy: 1000/15 == 66 tickets
POS reward per ticket: 1.78drc
So per 66 tickets you may get max. 66 x 1.78 == 117drc, at current price of 0,00305dcr/btc you may gain roughly 0.35btc. The soonest all your tickets can vote is around 28 days.
The process:
You buy tickets. Tickets will be moved to mempool. From the mempool POW miners will mine max. 20 tickets per block. If your ticket tx (sstx) gets mined and included in the block while the price of tickets you've paid lasts (remember it changes every 144 blocks), your ticket changes status to "immature". It will sit in the blockchain for 256 blocks (roughly 24hrs) before it can vote. After 24hrs, ticket changes status to "live" and from that moment can be selected to vote. Once that happens, you will get back price you have paid for the ticket + reward (1.78drc/ticket recently). So per ticket (bought for 15dcr), your reward will be around 11% per ticket.
Tickets are choosen to vote randomly. If the ticket is not selected to vote in roughly 140 days, it will get revoked and price you've paid will be returned minus tx fee.
The reality:
1. Price of tickets changes every roughly 12hrs + price of ticket reward every +-20days. Obviously, you want to buy at cheapest price possible to booster your gains. You can keep an eye on stats on Dyrk's
https://dcrstats.com. As it stands now, ticket price swings from low (below 20dcr/ticket) to highs every roughly 3 days. So it is best to watch the swing and once you see wildly high price to get ready to buy on next retarget. Once price is too high nobody will buy tickets in that 144 blocks period, so the diff will swing down wildly, usually below 15drc/ticket (see POS historical price change graph on Dyrk's dcrstats page).
2. Expect 5-10% of your live tickets to not vote (either because they get revoked, missed or just expire)
3. To keep steady reward income from POS, you need to smoothen the variance by constantly adding to your live tickets pool. Which means you have to buy and rebuy once in a while when the ticket price is low to keep your percentage share in stakepool at +-constant level. E.g.:
StakePool size now (total live tickets num.) is roughly: 42300tickets
So if you want to calculate how much you might get per month for 1000dcr, you would go like this:
Max. tickets that can vote per 24hrs: 12*24*5 == 1440 votes
Max reward per 24hrs from POS: 1440 x 1.78dcr == 2563dcr
If you have initially bought 66 tickets at 15dcr using those 1000dcr == you now hold 66/42300 == 0.15% of the whole stakepool. So you may expect around 0.15%*daily POS reward (2563dcr) == 3.8dcr/day (or around 3.8/1.78 == 2 tickets per day will vote). But to smoothen the variance and get steady rewards, you need to maintain this share of stakepool. Stakepool size keeps changing (up or down) during ticket price retargets based on interest of people buying tickets. So my advice is get additional 500dcr, buy on low ticket price using your 1000dcr and then keep rebuying additional tickets on low price during the month using those 500dcr to keep your share in the stakepool. If you maintain the share, then the calculations might be good. Otherwise, it is mostly guesswork