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Anonymous 10:16

The selection of cards in the shop changes daily.
You can buy several of the same card, but the price increases with each subsequent purchase.
3 random cards, of Common, Rare & Epic rarities, are shown everyday, except Sundays.
In a daily rotation, each player can buy up to 50 Common cards, 20 Rare cards, and 10 Epic cards, at increasing prices once one of the respective card rarities are bought.
- The prices of Common cards start at 3 Gold, the prices of Rare cards start at 40 Gold, and the prices of Epic cards start at 2,000 Gold.
  - The prices for the various rarities of cards purchased increases: Common cards increase by 20%, Rare cards increase by 40% and 80% for Epic cards.
On Sundays (Epic Sunday), 6 different cards are shown, instead of 3 different cards (2 Common cards, 2 Rare cards, 2 Epic cards).
Legendary cards don’t show up at the shop.

Number#	Common	Rare	Epic
1	3	40	2,000
2	4	56	3,600
3	5	78	6,480
4	6	109	11,664
5	7	153	20,995
6	8	214	37,791
7	10	300	68,024
8	12	420	122,443
9	14	588	220,397
10	17	823	396,715
11	20	1,152
12	24	1,613
13	29	2,258
14	35	3,161
15	42	4,425
16	50	6,195
17	60	8,673
18	72	12,142
19	86	16,999
20	103	23,799
21	124
22	149
23	179
24	210
25	258
26	310
27	372
28	446
29	535
30	642
31	770
32	924
33	1,109
34	1,331
35	1,597
36	1,916
37	2,299
38	2,759
39	3,311
40	3,973
41	4,768
42	5,722
43	6,866
44	8,239
45	9,887
46	11,864
47	14,237
48	17,084
49	20,501
50	24,601