Credit to @Taiglin
Please be mindful of summon odds.
Date: 1-3 August 2022
Offer: Valhalla Forever
Price: Varies
D1 S$44.98 / US$29.99
Gems = 3000
1000 coins = 3500 gems
10 WE Flasks = 1000 gems
Value in gems = 7500 => $107.78 from Shop
Discount 58%
Excluding the WE flasks, Discount is 52% for Gems & Coins.
UPDATED D1 Offer
Date: 24 October 2022
Offer: Valhalla D1 (Monster Lure offer)
Price: S$10.98 /US$6.99
WE Flask = 100 gems => $0.72 @ 50% discount
Loot Tix 100x @ S$0.07 => $7.00
VF Gnome Lure = S$3.26
Max gnomes 3 days = 75
Price per gnome for convenience = S$0.043
Additional gnomes 3 days = 30
Price per additional gnome = S$0.109
Update 5 June 2023: Revised pricing for SG
Effective 9 May 2023, Apple has relaxed their pricing tiers. SG appears to be one of the early recipients of Zynga tweaking. No change to US$ pricing.
D1 offer reduced by S$5. Bringing PPS down to S$1.999 (under S$2)
The Gnome offer is reduced by S$1. Reducing the price for the Lure to S$2.26.
D2 S$5.98 / US$3.99
300 coins = 1050 gems
2 WE flasks = 200 gems
Value in gems = 1250 => $17.96 from Shop
Discount 67%
Excluding the flasks, Discount is 60% for those 300 coins.
D3 S$2.98 / US$1.99
This offer comes with 25 pesky coins. 4 in stock = 100 coins = 1 summon.
Analysed as a 4x purchase:
Gems = 1600
Coins 100x = 350 gems
Value in gems = 1950 => $28.02 from Shop
Price for 4x of this offer = $11.92
Discount 57%
UPDATE: 30 August 2022
New S3 offer! Bestest offer yet if player only wants coins.
Date: 30 August 2022
Offer: Feel the Might (Elradir) - S3 coins
Price: S$21.98 / US$14.99
This is the latest offer for S3, in response to players’ comments on scarcity of coins from gnomes in VF. Instead of increasing the odds of getting gnomes or increasing coin drop, Zynga released this offer:
S3 1500 coins = 15 summons = 5250 gems
=> $75.45 from Shop
Discount 71%
Price per summon = S$1.465 / US$0.999
Compared to Valhalla Offers:
Excluding those WE flasks:
D1 = S$2.25 / US$1.50
D2 = S$1.99 / US$1.33
Update 21 December 2022
Bye Elradir. Hello Yang Mai! Value remains the same, sadly. 
Date: 18 January 2023
Offer: Feel The Might (Senan)
Price: S$6.98 / US$4.99
Hello Senan! Back with an itty bitty 5-summon offer this time.
Price per summon = S$1.396 / US$0.998
#valhallaoffers
#feelthepowerelradir
#feelthepowervalhalla
#valhallamonsterlure